The American Institute of Architects

American Planning Association

American Society of Civil Engineers

American Society of Landscape Architects

Andersen Corporation

Associated Builders and Contractors, Inc.

The Associated General Contractors of America

Bank of America

Deborah Berke & Partners Architects LLP   

BFC Partners

Bloomberg

The Capital Group Companies

Clark Construction Group, LLC

D.C. Commission on the Arts and Humanities,

  an agency supported in part by the National Endowment for the Arts

D.C. Children and Youth Investment Trust Corporation

Discovery Communications

Fannie Mae

Freddie Mac

FXFOWLE Foundation

Gensler

Hanley Wood

The Home Depot Foundation

International Masonry Institute

International Union of Bricklayers & Allied Craftworkers

The JBG Companies

Knoll, Inc.

Kohn Pedersen Fox Associates PC

Lafarge

Louis Dreyfus Property Group

MASCO Corporation

McGraw-Hill Construction

National Association of Home Builders

NATIONAL ASSOCIATION OF REALTORS ®

National Endowment for the Arts

Perkins + Will

Portland Cement Association

Robert A. M. Stern Architects LLP

Skidmore, Owings & Merrill LLP

Sorg & Associates, PC

STUDIOS Architecture

The Tower Companies

TROX USA, Inc.

Turner Construction Company

United Technologies Corporation

U.S. Department of Energy

U.S. Department of Housing and Urban Development

U.S. Environmental Protection Agency

U.S. Green Building Council

*Current as of October 1, 2008